<template>
  <div class="app-container">

    <!-- 查询和其他操作 -->
    <div class="filter-container">
      <el-input v-model="listQuery.id" clearable class="filter-item" style="width: 200px;" placeholder="请输入品牌商ID"/>
      <el-input v-model="listQuery.name" clearable class="filter-item" style="width: 200px;" placeholder="请输入品牌商名称"/>
      <el-button v-permission="['GET /admin/brand/list']" class="filter-item" type="primary" icon="el-icon-search"
                 @click="handleFilter">查找
      </el-button>
      <el-button v-permission="['POST /admin/brand/create']" class="filter-item" type="primary" icon="el-icon-edit"
                 @click="handleCreate">添加
      </el-button>
      <el-button :loading="downloadLoading" class="filter-item" type="primary" icon="el-icon-download"
                 @click="handleDownload">导出
      </el-button>
    </div>

    <!-- 查询结果 -->
    <el-table v-loading="listLoading" :data="list" element-loading-text="正在查询中。。。" border fit highlight-current-row>

      <el-table-column align="center" label="品牌商ID" prop="id"/>

      <el-table-column align="center" label="品牌商名称" prop="name"/>

      <el-table-column align="center" property="picUrl" label="品牌商图片">
        <template slot-scope="scope">
          <img v-if="scope.row.picUrl" :src="scope.row.picUrl" width="80">
        </template>
      </el-table-column>

      <el-table-column align="center" min-width="400px" label="介绍" prop="desc"/>

      <el-table-column align="center" label="底价" prop="floorPrice"/>

      <el-table-column align="center" label="操作" width="200" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button v-permission="['POST /admin/brand/update']" type="primary" size="mini"
                     @click="handleUpdate(scope.row)">编辑
          </el-button>
          <el-button v-permission="['POST /admin/brand/delete']" type="danger" size="mini"
                     @click="handleDelete(scope.row)">删除
          </el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination v-show="total>0" :total="total" :page.sync="listQuery.page" :limit.sync="listQuery.limit"
                @pagination="getList"/>

    <!-- 添加或修改对话框 -->
    <el-dialog :title="textMap[dialogStatus]" :visible.sync="dialogFormVisible">
      <el-form ref="dataForm" :rules="rules" :model="dataForm" status-icon label-position="left" label-width="100px"
               style="width: 400px; margin-left:50px;">
        <el-form-item label="品牌商名称" prop="name">
          <el-input v-model="dataForm.name"/>
        </el-form-item>
        <el-form-item label="介绍" prop="simpleDesc">
          <el-input v-model="dataForm.desc"/>
        </el-form-item>
        <el-form-item label="品牌商图片" prop="picUrl">
          <el-upload
            :headers="headers"
            :action="uploadPath"
            :show-file-list="false"
            :on-success="uploadPicUrl"
            class="avatar-uploader"
            accept=".jpg,.jpeg,.png,.gif">
            <img v-if="dataForm.picUrl" :src="dataForm.picUrl" class="avatar">
            <i v-else class="el-icon-plus avatar-uploader-icon"/>
          </el-upload>
        </el-form-item>
        <el-form-item label="底价" prop="floorPrice">
          <el-input v-model="dataForm.floorPrice"/>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">取消</el-button>
        <el-button v-if="dialogStatus=='create'" type="primary" @click="createData">确定</el-button>
        <el-button v-else type="primary" @click="updateData">确定</el-button>
      </div>
    </el-dialog>

  </div>
</template>

<style>
  .avatar-uploader .el-upload {
    border: 1px dashed #d9d9d9;
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
  }

  .avatar-uploader .el-upload:hover {
    border-color: #20a0ff;
  }

  .avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 120px;
    height: 120px;
    line-height: 120px;
    text-align: center;
  }

  .avatar {
    width: 145px;
    height: 145px;
    display: block;
  }
</style>

<script>
  import {createBrand, deleteBrand, listBrand, updateBrand} from '@/api/brand'
  import {uploadPath} from '@/api/storage'
  import {getToken} from '@/utils/auth'
  import Pagination from '@/components/Pagination' // Secondary package based on el-pagination

  export default {
    name: 'Brand',
    components: {Pagination},
    data() {
      return {
        uploadPath,
        list: [],
        total: 0,
        listLoading: true,
        listQuery: {
          page: 1,
          limit: 20,
          id: undefined,
          name: undefined,
          sort: 'add_time',
          order: 'desc'
        },
        dataForm: {
          id: undefined,
          name: '',
          desc: '',
          floorPrice: undefined,
          picUrl: undefined
        },
        dialogFormVisible: false,
        dialogStatus: '',
        textMap: {
          update: '编辑',
          create: '创建'
        },
        rules: {
          name: [
            {required: true, message: '品牌商名称不能为空', trigger: 'blur'}
          ]
        },
        downloadLoading: false
      }
    },
    computed: {
      headers() {
        return {
          'X-Litemall-Admin-Token': getToken()
        }
      }
    },
    created() {
      this.getList()
    },
    methods: {
      getList() {
        this.listLoading = true;
        listBrand(this.listQuery)
          .then(response => {
            this.list = response.data.data.list;
            this.total = response.data.data.total;
            this.listLoading = false
          })
          .catch(() => {
            this.list = [];
            this.total = 0;
            this.listLoading = false
          })
      },
      handleFilter() {
        this.listQuery.page = 1;
        this.getList()
      },
      resetForm() {
        this.dataForm = {
          id: undefined,
          name: '',
          desc: '',
          floorPrice: undefined,
          picUrl: undefined
        }
      },
      handleCreate() {
        this.resetForm();
        this.dialogStatus = 'create';
        this.dialogFormVisible = true;
        this.$nextTick(() => {
          this.$refs['dataForm'].clearValidate()
        })
      },
      uploadPicUrl: function (response) {
        this.dataForm.picUrl = response.data.url
      },
      createData() {
        this.$refs['dataForm'].validate(valid => {
          if (valid) {
            createBrand(this.dataForm)
              .then(response => {
                this.list.unshift(response.data.data);
                this.dialogFormVisible = false;
                this.$notify.success({
                  title: '成功',
                  message: '创建成功'
                })
              })
              .catch(response => {
                this.$notify.error({
                  title: '失败',
                  message: response.data.errmsg
                })
              })
          }
        })
      },
      handleUpdate(row) {
        this.dataForm = Object.assign({}, row);
        this.dialogStatus = 'update';
        this.dialogFormVisible = true;
        this.$nextTick(() => {
          this.$refs['dataForm'].clearValidate()
        })
      },
      updateData() {
        this.$refs['dataForm'].validate(valid => {
          if (valid) {
            updateBrand(this.dataForm)
              .then(() => {
                for (const v of this.list) {
                  if (v.id === this.dataForm.id) {
                    const index = this.list.indexOf(v);
                    this.list.splice(index, 1, this.dataForm);
                    break
                  }
                }
                this.dialogFormVisible = false;
                this.$notify.success({
                  title: '成功',
                  message: '更新成功'
                })
              })
              .catch(response => {
                this.$notify.error({
                  title: '失败',
                  message: response.data.errmsg
                })
              })
          }
        })
      },
      handleDelete(row) {
        deleteBrand(row)
          .then(response => {
            this.$notify.success({
              title: '成功',
              message: '删除成功'
            });
            const index = this.list.indexOf(row);
            this.list.splice(index, 1)
          })
          .catch(response => {
            this.$notify.error({
              title: '失败',
              message: response.data.errmsg
            })
          })
      },
      handleDownload() {
        this.downloadLoading = true;
        import('@/vendor/Export2Excel').then(excel => {
          const tHeader = [
            '品牌商ID',
            '品牌商名称',
            '介绍',
            '低价',
            '品牌商图片'
          ];
          const filterVal = ['id', 'name', 'desc', 'floorPrice', 'picUrl'];
          excel.export_json_to_excel2(
            tHeader,
            this.list,
            filterVal,
            '品牌商信息'
          );
          this.downloadLoading = false
        })
      }
    }
  }
</script>
